We use cookies to deliver essential features and to measure their performance. By using this site you accept our Privacy Policies.
A Complete Guide to the Solar System and the Night Sky
Donate now and help us to keep this site free and ad-free!
public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
north SunriseRise: 7:48  
clear_day Transit: 11:49  
SunsetSet: 15:50 south
wb_twilight Nautical TwilightWhat's Visible Now?
All Constellations » Auriga » 

18 Aurigae

Altitude: 21.0°   Azimuth: 298.6°   Direction: West-North-West

18 Aurigae is a double main-sequence star in the constellation of Auriga.

18 Aurigae visual magnitude is 6.49. Because of its reltive faintness, 18 Aurigae should be visible only from locations with dark skyes, while it is not visible at all from skyes affected by light pollution.

The table below summarizes the key facts about 18 Aurigae:


18 Aurigae is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 21.0°
Azimuth: 298.6°
Direction: West-North-West

Celestial coordinates and finder chart of 18 Aurigae

18 Aurigae is situated north of the celestial equator, as such, it is more easily visible from the northern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of 18 Aurigae are provided in the following table:

05h 19m 23s
+33° 59’ 08”

The simplified sky map below shows the position of 18 Aurigae in the sky:

Finder chart 18 Aurigae star
Simplified finder chart for 18 Aurigae.

Visibility of 18 Aurigae from your location

Location: Greenwich, United Kingdom edit_location_alt
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

Today's 18 Aurigae rise, transit and set times from Greenwich, United Kingdom edit_location_alt are the following (all times relative to the local timezone Europe/London):

Azimuth: 56.0°
Max altitude: 72.5°
Azimuth: 304.0°

Digitized Sky Survey image of 18 Aurigae

The image below is a photograph of 18 Aurigae from the Digitized Sky Survey 2 (DSS2 - see the credits section) taken in the red channel. The area of sky represented in the image is 0.5x0.5 degrees (30x30 arcmins). The proper motion of 18 Aurigae is 0.009 arcsec per year in Right Ascension and -0.01 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of 18 Aurigae star
DSS2 image of 18 Aurigae. The red arrow shows the motion of 18 Aurigae during the next 10000 years (1.50 arcmin in Right Ascension and -1.67 arcmin in declination);

Distance of 18 Aurigae from the Sun and relative movement

18 Aurigae is distant 235.38 light years from the Sun and it is moving far from the Sun at the speed of 7 kilometers per second.

72.20 pc
235.38 ly
7 km/s
0.009 arcsec/year
-0.01 arcsec/year

Spectral properties of 18 Aurigae

18 Aurigae belongs to spectral class A7 and has a luminosity class of V corresponding to a main-sequence star.


The red dot in the diagram below shows where 18 Aurigae is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of 18 Aurigae. Attribution: Richard Powell / CC BY-SA

18 Aurigae star system properties

18 Aurigae is a visual double star which can be observed with the help of small or medium telescopes. The table below shows key information about the 18 Aurigae double sysyem:

3.8 arcsec

Alternative designations of 18 Aurigae